28327805833 has 4 divisors (see below), whose sum is σ = 28328225940. Its totient is φ = 28327385728.

The previous prime is 28327805809. The next prime is 28327805867. The reversal of 28327805833 is 33850872382.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10396453369 + 17931352464 = 101963^2 + 133908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28327805833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28327805873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83488 + ... + 252241.

It is an arithmetic number, because the mean of its divisors is an integer number (7082056485).

Almost surely, 2^28327805833 is an apocalyptic number.

It is an amenable number.

28327805833 is a deficient number, since it is larger than the sum of its proper divisors (420107).

28327805833 is an equidigital number, since it uses as much as digits as its factorization.

28327805833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420106.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 28327805833 in words is "twenty-eight billion, three hundred twenty-seven million, eight hundred five thousand, eight hundred thirty-three".